JP3669812B2 - サーボアドレスマーク検出ミッシングによるサーボパターンオーバライト防止回路 - Google Patents
サーボアドレスマーク検出ミッシングによるサーボパターンオーバライト防止回路 Download PDFInfo
- Publication number
- JP3669812B2 JP3669812B2 JP11305797A JP11305797A JP3669812B2 JP 3669812 B2 JP3669812 B2 JP 3669812B2 JP 11305797 A JP11305797 A JP 11305797A JP 11305797 A JP11305797 A JP 11305797A JP 3669812 B2 JP3669812 B2 JP 3669812B2
- Authority
- JP
- Japan
- Prior art keywords
- servo
- address mark
- pulse
- signal
- servo address
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
- G11B5/58—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
- G11B5/596—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for track following on disks
- G11B5/59633—Servo formatting
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
- G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
- G11B27/19—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier
- G11B27/28—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording
- G11B27/30—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on the same track as the main recording
- G11B27/3027—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on the same track as the main recording used signal is digitally coded
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
- G11B5/58—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
- G11B5/596—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for track following on disks
- G11B5/59605—Circuits
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
- Moving Of The Head To Find And Align With The Track (AREA)
- Indexing, Searching, Synchronizing, And The Amount Of Synchronization Travel Of Record Carriers (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1996P13886 | 1996-04-30 | ||
KR1019960013886A KR100194023B1 (ko) | 1996-04-30 | 1996-04-30 | 서보 어드레스 마크 검출 미싱으로 인한 서보패턴 오버라이트 방지회로 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH1050015A JPH1050015A (ja) | 1998-02-20 |
JP3669812B2 true JP3669812B2 (ja) | 2005-07-13 |
Family
ID=19457378
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11305797A Expired - Fee Related JP3669812B2 (ja) | 1996-04-30 | 1997-04-30 | サーボアドレスマーク検出ミッシングによるサーボパターンオーバライト防止回路 |
Country Status (5)
Country | Link |
---|---|
US (1) | US6115199A (de) |
JP (1) | JP3669812B2 (de) |
KR (1) | KR100194023B1 (de) |
DE (1) | DE19718114B4 (de) |
GB (1) | GB2312780B (de) |
Families Citing this family (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR0176651B1 (ko) * | 1996-06-27 | 1999-04-15 | 김광호 | 서보 어드레스 마크 자동검출 및 서보타이밍 보상회로 |
US6195767B1 (en) * | 1998-09-14 | 2001-02-27 | Phillip M. Adams | Data corruption detection apparatus and method |
JP2000123491A (ja) * | 1998-10-14 | 2000-04-28 | Alps Electric Co Ltd | 磁気ディスク装置 |
JP2000195172A (ja) * | 1998-12-24 | 2000-07-14 | Sony Corp | データ記録及び/又は再生装置 |
JP4263340B2 (ja) * | 2000-07-07 | 2009-05-13 | ヒタチグローバルストレージテクノロジーズネザーランドビーブイ | 回転記憶装置およびその制御方法 |
US6900955B2 (en) * | 2001-05-22 | 2005-05-31 | Seagate Technology Llc | Method and apparatus providing variable spin pad lengths |
JP3561246B2 (ja) * | 2001-08-02 | 2004-09-02 | 株式会社東芝 | ディスク記憶装置及びサーボ情報の位置ずれ補償方法 |
JP3556623B2 (ja) * | 2001-08-02 | 2004-08-18 | 株式会社東芝 | ディスク記憶装置及び同装置におけるサーボセクタパルス生成方法 |
US7006311B2 (en) * | 2002-12-27 | 2006-02-28 | Matsushita Electric Industrial Co., Ltd | Systems for preventing channel control values from being corrupted to thereby improve servo-demodulation robustness |
US6995935B2 (en) * | 2002-12-27 | 2006-02-07 | Matsushita Electric Industrial Co., Ltd. | Methods for detecting multiple occurrences of a SAM pattern to thereby improve servo-demodulation robustness |
US7016133B2 (en) * | 2002-12-27 | 2006-03-21 | Matsushita Electric Industrial Co., Ltd. | Systems for detecting multiple occurrences of a SAM pattern to thereby improve servo-demodulation robustness |
US7006312B2 (en) * | 2002-12-27 | 2006-02-28 | Matsushita Electic Industrial Co., Ltd. | Methods for preventing channel control values from being corrupted to thereby improve servo-demodulation robustness |
US7009806B2 (en) * | 2003-02-19 | 2006-03-07 | Matsushita Electric Industrial Co., Ltd. | Accurate tracking of coil resistance |
US7082009B2 (en) * | 2003-02-19 | 2006-07-25 | Matsushita Electric Industrial Co., Ltd. | Accurate tracking of coil resistance based on current, voltage and angular velocity |
US7054083B2 (en) * | 2003-07-16 | 2006-05-30 | Matsushita Electric Industrial Co., Ltd. | Systems for searching for SAM patterns at multiple nominal frequencies |
US7075742B2 (en) * | 2003-07-16 | 2006-07-11 | Matsushita Electric Industrial Co., Ltd. | Servo demodulator systems including multiple servo demodulators |
US7072128B2 (en) * | 2003-07-16 | 2006-07-04 | Matsushita Electric Industrial Co., Ltd. | Methods for searching for SAM patterns at multiple nominal frequencies |
US7092177B2 (en) * | 2003-07-16 | 2006-08-15 | Matsushita Electric Industrial Co., Ltd. | Methods for searching for SAM patterns using multiple sets of servo demodulation detection parameters |
US6917486B2 (en) * | 2003-07-18 | 2005-07-12 | Matsushita Electrical Industrial Co., Ltd. | Direct detection of coil resistance |
US8405924B2 (en) * | 2004-04-30 | 2013-03-26 | Agere Systems Llc | Method and apparatus for improved address mark detection |
JP4991469B2 (ja) * | 2007-09-28 | 2012-08-01 | 株式会社東芝 | サーボフレーム間隔補正装置、記憶装置、サーボフレーム間隔補正方法 |
US8749909B1 (en) * | 2012-12-23 | 2014-06-10 | HGST Netherlands B.V. | Disk drive with servo system with timing adjustments to master timer for SAM detection errors |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0241868B1 (de) * | 1986-04-16 | 1996-03-20 | Hitachi, Ltd. | Plattengerät |
US4823212A (en) * | 1986-11-26 | 1989-04-18 | Hewlett-Packard Company | Sampled servo code format and system for a disc drive |
JPH0821213B2 (ja) * | 1988-08-05 | 1996-03-04 | 富士通株式会社 | セクターサーボ情報検出方法 |
US5210660A (en) * | 1990-01-17 | 1993-05-11 | International Business Machines Corporation | Sectored servo independent of data architecture |
US5420730A (en) * | 1990-08-17 | 1995-05-30 | Moon; Ronald R. | Servo data recovery circuit for disk drive having digital embedded sector servo |
US5255136A (en) * | 1990-08-17 | 1993-10-19 | Quantum Corporation | High capacity submicro-winchester fixed disk drive |
US5231545A (en) * | 1991-06-04 | 1993-07-27 | Quantum Corporation | Fault tolerant rll data sector address mark decoder |
US5517371A (en) * | 1991-10-18 | 1996-05-14 | Teac Corporation | Track sector detection system for rotating disk data storage apparatus |
US5444685A (en) * | 1991-12-16 | 1995-08-22 | Advanced Micro Devices, Inc. | Sector mark pattern detection for optical data disk controller |
US5384671A (en) * | 1993-12-23 | 1995-01-24 | Quantum Corporation | PRML sampled data channel synchronous servo detector |
KR970010638B1 (ko) * | 1994-05-11 | 1997-06-28 | 삼성전자 주식회사 | 서보 어드레스 마크 검출 보상 회로 |
JPH0831102A (ja) * | 1994-07-15 | 1996-02-02 | Toshiba Corp | データ記録再生装置及び同装置に適用されるサーボセクタパルス生成方法 |
US5544135A (en) * | 1994-10-11 | 1996-08-06 | Quantum Corporation | Fault tolerant servo address mark for disk drive |
US5977472A (en) * | 1997-01-08 | 1999-11-02 | Yamaha Corporation | Chord detecting apparatus and method, and machine readable medium containing program therefor |
-
1996
- 1996-04-30 KR KR1019960013886A patent/KR100194023B1/ko not_active IP Right Cessation
-
1997
- 1997-04-29 DE DE19718114A patent/DE19718114B4/de not_active Expired - Fee Related
- 1997-04-30 JP JP11305797A patent/JP3669812B2/ja not_active Expired - Fee Related
- 1997-04-30 GB GB9708762A patent/GB2312780B/en not_active Expired - Fee Related
- 1997-04-30 US US08/841,602 patent/US6115199A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
KR970071711A (ko) | 1997-11-07 |
GB2312780B (en) | 1998-07-15 |
JPH1050015A (ja) | 1998-02-20 |
US6115199A (en) | 2000-09-05 |
DE19718114B4 (de) | 2010-02-25 |
DE19718114A1 (de) | 1997-11-13 |
KR100194023B1 (ko) | 1999-06-15 |
GB9708762D0 (en) | 1997-06-25 |
GB2312780A (en) | 1997-11-05 |
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